Carbureter.



H. C. MERRMM.

CARMRETER.

APmlcAmw 'Hman ma. 2z, 191.5.

www@ my a; mi

2 SHEETS-SHEET i CMBURETER GO., 0E NDEANAFQLES,

NDIANA, A CGBJPGETION OE' ENDXN..

@.ELE/IBURETEE.

Specicetion ef Letters Eatent. Paaijiteed Si, lgll'ii'.,

Application led 'March 22, 19M. Eerel No. 85,586.

T 0 all whom at' may Be it known that l, HARRY C. Maenner, a citizen ot'the United States, and a resident of indianapolis, in the county oEMarion and State of indiana, have invented certain new and usefulmprovements in Carbureters, of which the following is a specification.

My invention relates to earbureters for use with internal combustionengines and is an improvement over the form shown and described in myLet-ters Patent No. LS'TAS, issued to me on the 13th day ot flune,y1916.

cline of my principal objects is to efieet a maximum saving in fuel bycausing the same to be broken up as it emerges from a nozzle, and toinsure a thorough saturation of air at all engine speeds through themanner of introducing-the air around a nozzle.

Another object is to derive maximum power from all points ot ecnomysavingr and by minimizing friction in the air passages. Also by means ofdamper-s of a peculiar `construction which are `adapted to open in thedegree oi engine requirements and in a progressively easier manner due'to their manner oii mounting. thereby asv suring lowvaeuum so necessaryto obtain maximum power and uncommon 'to the con'- ventional carbureterof spring and weight type.

A further obieet is to provide a plurality of venturis which aresuccessively brought into action according to engine requirements.whereby perfect acceleration is aecomplished and the correct amount offuel is delivered. this being essential to prevent the engine fromchoking or loading.

A further object is to provide a supplemental control whereby aninitially rich mixture is provided for starting. and further objects areto provide such earhureters which arc simple in. construction.assembling. and installation. which are well adapted to the purposes torwhich they are designed. whieh are composed of tew parts not likely toget out of order. and which are comparatively inexpensive.

My invention is fully described in the tollowing specification.A ofwhich the aecompanying drawings'form a part, in which like eharactersreifer to like parts in each of the views. and in which Figure 1 is asection taken through a. carburetor constructed in accordance with myinvention. on the line l of Fig. 3;

Fig. 2 is a section taken on the line 2 2 of Fig. l;

Fig'. 3 is a section taken on the line 3 3 of Fig. l; and Fig. i is afragmentary detached view of a detail.

Referring' to the drawings, 5 represents a casing divided into a lioatchamber 6. -a mixing chamber 7 having a pipe 8 leading to the manifoldintake ot' the engine and in which is a. butterliy-valve 9, and an airchamber l0 to which air is led through a pipe 11.

The ffasolene ,is led through a nipple l2 carried by a collar 13 held ona plug 14 by means of a nut 15, said plug having bores lo and 17 joiningthe interior of the collar 13 with the interior of the float chamber 6.

lWithin the chamber 6' is a vertically movable float '18 upon ther uppersurface of which two weights 19 rest, said weights being carried bylevers 2O pivoted to a removable eover 2l of the chamber 6 at 22 and theinner ends oi said levers bear against 'the under side of a flange 23upon a, needle valve Q4 normally closing the bore .17 and guided in thecover 21, a cap Q5 being provided for said valve on said cover, and thefioat chamber has a pipe 26 connected with the lower part thereoiI andwhich pipe extends beneath the mixing chamber "1', a screw threaded plugQ7 closing the outer end of said pipe.

Thepipe, 26 is pierced byv a nozzle 2S threaded thereinto and assembledthrough an opening 29 vclosed by a plug 30, this nozzle being arrangedwithin a. venturi 31 adjacent the float Chamber 6 in communication ywithboth the air and mixing chambers 10 and 7, respectively through aeonstricted passage of least diameter in the position of the upper endot' the nozzle 28.

The, nozzle 28 is normally closed by means ot a needle valve 32 havinga` hemi-spherical flange 33 thereon slightly above the nozzle and guidedin a plugl S4 in the upper snrclosed by means of The opposite end ofthej lever fie engaged in e not e? the uppenportion ol the casing; 5,coil Arranged onthe e 8 is e nozzle 37 piero/ii assembled through on aplug 39, and seid e3 rests upon e transverse pin e vertically movable 1ni, spring' 'L18 maintaining lever engagement with said pin, enel saidlevei' 43 is provided with e bore for thepessege of the needle valve 32,the flange 85 bearing on the upper surface of the lever li-3, and itWill he noted that by rotating the nut-4:7 the relationship hetween theneedle valve 32 and the nozzle `28 may be adjusted and'flifting the nutl? 'will open the nozzle 28^to provide on initially rich mixture i'orengine starting with out changing the seid 'relationship other then forthe moment seid nut is held raised.

Within the casing vo, between the chembers 7 and l0, are tvvo partitionplates i9 ezido) carrying pivots 51 and 52 for two leef 'members 53 and5l normally in horizontol arrangement and the inner ends of which touchto forni e partition between the chambers and l0, lout the contectingedges thereof are jointly provided with e circular opening for thepassage of the needle valve j that no air may pese' 4G, and it will benoted from the chamber l0 to the chamber .7 when these leef members arein normal positions, nor con any gasolene'escepe from the nozzle 37 whenthe needle valve l0 isin its normal lai-ged from the vgradually for oreason-later pointed nozzle closing position.

Each of these leaf members 53 end 54 corries a damper, 55 and 5t'respectively, e2;- tended from side Wall to side Wall of the casing 5,as do also the plates t9- ond 50 ond the leef members 525 and 54,thesezdornpers being curved eccentrically of tli'e're'spectiye pivots 51and to2' 'and having; depending Wings 57 Iend 'ftlie inner surecesefeach el? which yis oreuated and progressively encontecting edges oft theplates 49 and 50 tofprpvide e. gradually enlarged spece between seiddempers' and .idepending y selling upwardly on their pivots out,there/hy providing e venturi ci gradually increasing 'respective leefmemoers 53 and 54: end 'to v.es

the lever 3 and to each. other et 63 reise the oi the outltpipe meintointhe needle- -fl in e threaded rod' wings as the 4 leef membersJareneedle-valve' Al0 to allow cope from the nozzle 37 correspondinglyand at the seme time edmitting air to the mixing;` chamber 7 around thenozzle 37 and between the edges of the lee-ll members '53 and 5e, thedegree of needle valve opening being less than the degree of lee-iimember, movement et their adjacent edges because-of the diiierence ofradii of the arcs described by the seid edges and the pivots 6l end62,and this needle movement becomes progressively lees with the seme lealmember movement as the pivots 6l andv G2 approach the vertical axialplanes of the pivots'l ond 52, thereby the gosolene to esletionship ofthe 'pivots 6l and 62 nd 5l y lamd 52 renders the 'leef member movementprogressivelyieesier es the letter are raised.

ln Figs. l and fl l lieve shown extensions to the needle valves in the'fuel nozzles consisting oil-o rod 64 on. each-valve carrying o spider65, or ported disk, et its lower end, this serving' guiding ineens forthe respective valve, but l do notl lto the use thereof as any suitableequivalent moy be employed.

When the butterfly-valve 9 is partly opened, the desiredreletionsliipbetvveen the nozzle 2F) and needle valve 32 havingpreviously been attained by m on r the threaded rod 46., sucked out ofthe nozzle 28 :1nd,striling against the rounded surface of the onge 33,is broken up and saturetes the oir passing upwerdlyeround the .nozzle 28on its wevto the pipe 8 ond to the engine.

When 'the bntterlly-valve continues to open and the demand for fuelbecomes too greet for the venturi. 31 to. tition plates 53 andv 54: andconnected dem` -pers 55 `incl 56 rise in accordance with the demand,thereby raising'the needle volvo 40 et the diflerentspeeds,

but the valve 40 may he vertically adjusted hy .means of nuts 66 wherebymore or less gesolenemoy'he supi inventori 3l the mixtureisr'chedliir'tlie progressive needle volvo opening, but `in thesupplemental venturi the mixture" is gradual y impoverishedes thegreatly enconline myself supply the per;

ico4

l 3.20. .while the engine 1s et mexlmum eclenoy `speed ofthe engineinreeses end'enfl substantially :lessees gine demand for luel oeoomesgreater and, in starting, the nut l? may loe manually7 lifted. to causeanr initially rich without in any way altering the preoeter minedadjustments.

'My (airlnireter is thoroughly praeticah lool-prooi, and entirely anto-Inatie in action to comply with the engine demands and. while l haveshown a preferred ennhodiinent thereof, l may change the details shownand desrrihed provided such changes do not depart from the spirit of theinvention or the seope of the aps pended claims.

'Having full y described my invention.E what I claim as new7 and desireto secure ley 1. A carburetor, comprising an oil supply, a plurality ofnozzles in eoinniui'iieation therewith, a valve for each nozzle? meansfor leading' air around eaeh nozzle, two pivoted dainpers enihraeineyone oi said nozzles adapted to he raised hy a demand oll aneugine. andlinks connecting;- said dainpers pirotally with the respective valve toopen the latter as said dempers are raised to increase thl air supply.

2. A carburetor` coni risinfr an oil sus lv f ZD -1 5 a plurality of'nozzles communication therewith, a valve for each nozzle, means forleading air around eaeh nozzle, 'two pirated dampers emhra'icing one ofsaid nozzles and provided with surfaces eccentric to their pivotswhereby said dampers gradually separated from eaoh other and from saidnozzle when raised from normal positions to increase the air supply, andlinks conneetingl said dampers pivotally with the respective valve toopen the latter as said dampers are raised to inerease the air supply.

3. A carburetor, comprising .an oil supply` a plurality of nozzles incommunication therewith, a valve for each nozzle, means for leadingairraronnd said nozzles, two pivoted dampers emhracingn one of saidnozzles and provided with surlaees eeeentrie to their pivots wherehysaid danuiers recede from each other and 'from said nozzle when raisedfrom normal positions to inerease the air supply, and links pivoled tosaid dainpers adjacent their pivotsand to said valve of said nozzlewherehy said Valve will he .raised in gradually decreased degree as saiddainpers are progres ely1 raised lo increase the air supply and thusiinporerish the milzlure :it increasing engine speeds. l

i. A eaihureter eomprising a easing', an oil supplyi a plurality otnozzles oomniuniealion tluzrewith for leading air around said nozzles, apartition arranged horizontally in said easingy consisting olopposi'tely directed plates, a lealg roem her piroted to eaeh plate andnormali." touehingg' each other at treir outer edges and onlin-:ning oneof said nozzles, a Valve 'For nach nozzle, and means 'for raising thevalve of said einhraeed nozzle when said leal' nien'ihers are raised,thereby increasing the supply or" the vfuel mixture.

A earhure'ter, Comprising Casing, an oil suppljwa plurality of nozzlesin communieation therewilln a "faire for each nozzle, means for leadingair around each nozzle, a partition in said easing;l consisting' ofeppositely direeled plates and normally oontaetingg plates pivoter" tosaid first named plates 'and ennhrzufineA one of said nozzles, meansVior raising' the valve of said embraced nozzle when said contacting;plates are raised. and means for providing; a circular venturi aroundsaid embraced nozzle eonsisting ot dependent wings of interior arenateformation the radius of whichv is prole'ressively increased downwardly,whereby a gradually increasingI diameter of said Venturi results assaid. Contacting plates are raised to inerease the air supply.

A Carburetor, comprising a easing an oil supply a plurality of nozzlesin com niuncation therewith, a valve for each nozzle, means for leading;air around said nozzles, means for adjustingf one oil said valves Y withrespect to its nozzle, means for inereas in e' the air supply and forgradually' increasing the oil supply the other nozzle in adeereasineproportion, and a lei/'er in pivotal eonneel'ion with saidfirst named valve,

with said adjusting; means, and with the vvalve of said last namednozzle whereby 'the opening' of the valve of said last named nozzle willraise 'the valve of said named nozzle in the degree of enginerequirement lin RR LL' C RRLL lillRRllli/l. W' i tnesses laisin'n i2 Tri aflossing l?! .RSHALL

